[jira] [Commented] (FLINK-2936) ClassCastException when using EventTimeSourceFunction in non-EventTime program

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-2936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15048779#comment-15048779 ] 

ASF GitHub Bot commented on FLINK-2936:
---------------------------------------

GitHub user aljoscha opened a pull request:

    https://github.com/apache/flink/pull/1448

    [FLINK-2936] Fix ClassCastException for Event-Time source

    Before, would throw a ClassCastException when emitting watermarks with
    timestamp/watermark multiplexing disabled.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/aljoscha/flink watermark-fix-processing-time

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/1448.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1448
    
----
commit bbc44047052dd795a26540888255fae911668053
Author: Aljoscha Krettek <al...@gmail.com>
Date:   2015-12-09T15:00:12Z

    [FLINK-2936] Fix ClassCastException for Event-Time source
    
    Before, would throw a ClassCastException when emitting watermarks with
    timestamp/watermark multiplexing disabled.

----


> ClassCastException when using EventTimeSourceFunction in non-EventTime program
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-2936
>                 URL: https://issues.apache.org/jira/browse/FLINK-2936
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 0.10.0
>            Reporter: Fabian Hueske
>            Assignee: Aljoscha Krettek
>             Fix For: 1.0.0
>
>
> Using an {{EventTimeSourceFunction}} in a DataStream programs that does not operate with {{TimeCharacteristic.EventTime}} leads to a {{ClassCastException}} when the first {{Watermark}} is emitted:
> {code}
> Caused by: java.lang.ClassCastException: org.apache.flink.streaming.api.watermark.Watermark cannot be cast to org.apache.flink.streaming.runtime.streamrecord.StreamRecord
> {code}
> This exception is not very helpful for users that simply for got to set the correct {{TimeCharacteristic}} and should be improved.



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